Generally, a download manager enables downloading of large files or multiples files in one session.
Many web browsers, such as Internet Explorer 9, include a download manager.
Stand-alone download managers also are available, including the Microsoft Download Manager.

if you do not have a download manager installed, and still want to download the file(s) you've chosen, please note:

You may not be able to download multiple files at the same time.
In this case, you will have to download the files individually.
(You would have the opportunity to download individual files on the "Thank you for downloading" page after completing your download.)

Files larger than 1 GB may take much longer to download and might not download correctly.

You might not be able to pause the active downloads or resume downloads that have failed.

The Microsoft Download Manager solves these potential problems.
It gives you the ability to download multiple files at one time and download large files quickly and reliably.
It also allows you to suspend active downloads and resume downloads that have failed.

Note:
Some components in the Microsoft® SQL Server® 2008 R2 SP2 Feature Pack of SQL Server® have certain Internet-enabled features, including the Customer Experience Improvement Program and Error and Usage Reporting component, enabled by default to help us identify and address issues that you may encounter while using SQL Server®. For more information and instructions on how to disable these features, see the SQL Server® Privacy Statement.

Each item in Instructions section describes a short description of the package.
The audience(s) for which it was intended is as follows:

Customer:
An individual may want to install this for additional licensed functionality.

Partner:
An ISV may want to ship this as a redistributable component as part of their application.

Developer:
A programmer may want to install this to support application development.

Note:
To archive a copy of the license terms, prior to accepting them, copy and paste the terms to a word processing program, then print or save the file to your favorite directory.

Note:
System requirements for each Feature Pack is dependant on required technologies. When redistributing a Feature Pack, please refrain from renaming package filenames as there could unexpected failures during installation, update, or removal for the package.

Microsoft® SQL Server Report Builder 3.0 for Microsoft® SQL Server 2008 R2 SP2
Report Builder 3.0 introduces additional visualizations including maps, sparklines and databars which can help produce new insights well beyond what can be achieved with standard tables and charts. The Report Part Gallery is also included in this release - taking self-service reporting to new heights by enabling users to re-use existing report parts as building blocks for creating new reports in a matter of minutes with a “grab and go” experience. Additionally, users will experience significant performance improvements with enhancements to the ability to use Report Builder in server mode. This allows for much faster report processing with caching of datasets on the report server when toggling between design and preview modes.

Microsoft® SQL Server® 2008 R2 Reporting Services Add-in for Microsoft® SharePoint® Technologies 2010
The Microsoft SQL Server 2008 R2 Reporting Services Add-in for Microsoft SharePoint Technologies 2010 allows you to integrate your reporting environment with SharePoint to experience the benefits of using the collaborative environment provided by SharePoint. Once you install the Reporting Services Add-in and configure your servers for integration, you can publish Reporting Services content to a SharePoint library and then view and manage those documents directly from a SharePoint site.

Microsoft® SQL Server® PowerPivot for Microsoft® Excel
Microsoft SQL Server PowerPivot for Microsoft Excel 2010 is a data analysis tool that delivers unmatched computational power directly within Microsoft Excel. Users can transform mass quantities of data with incredible speed into meaningful information to get the answers they need within seconds.

Microsoft® Connector 1.1 for SAP BW for SQL Server® 2008 R2
The Microsoft Connector for SAP BW is a set of managed components for transferring data to or from an SAP NetWeaver BW version 7.0 system. The component is designed to be used with the Enterprise and Developer editions of SQL Server 2008 R2 Integration Services. To install the component, run the platform-specific installer for x86, x64, or Itanium computers respectively. For more information see the Readme and the installation topic in the Help file.

Microsoft® System CLR Types for SQL Server® 2008 R2
The SQL Server System CLR Types package contains the components implementing the geometry, geography, and hierarchy id types in SQL Server 2008 R2. This component can be installed separately from the server to allow client applications to use these types outside of the server.

Microsoft® SQL Server® 2008 R2 Remote Blob Store
The SQL Server Remote Blob Store is a method for storing blobs of unstructured data in an external Content Addressable data store. The component consists of a client-side DLL that is linked into a user application, as well as a set of stored procedures to be installed on SQL Server. Run the self-extracting download package to create an installation folder. The setup program contained there will install RBS on X86, X64, and Itanium-based computers.

Microsoft® SQL Server® Service Broker External Activator for SQL Server® 2008 R2
The Microsoft SQL Server 2008 R2 Service Broker External Activator is an extension of the internal activation feature in SQL Server 2008 R2 that lets you move the logic for receiving and processing Service Broker messages from the Database Engine service to an application executable that runs outside SQL Server. By doing this, cpu-intensive or long-duration tasks can be offloaded out of SQL Server to an application executable, possibly in another computer. The application executable can also run under a different Windows account from the Database Engine process. This gives administrators additional control over the resources that the application can access. Run the self-extracting download package to create an installation folder. Read Books Online for more information. The single setup program will install the service on x86, x64, and IA64 computers. Read the documentation for more information.

Microsoft® Windows PowerShell Extensions for SQL Server® 2008 R2
The Microsoft Windows PowerShell Extensions for SQL Server2008 R2 includes a provider and a set of cmdlets that enable administrators and developers to build PowerShell scripts for managing instances of SQL Server. The SQL Server PowerShell Provider delivers a simple mechanism for navigating SQL Server instances that is similar to file system paths. PowerShell scripts can then use the SQL Server Management Objects to administer the instances. The SQL Server cmdlets support operations such as executing Transact-SQL scripts or evaluating SQL Server policies.